Re: how to combine two clones in a collection

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Hi,

On Wed, 11 Jul 2007, martin f krafft wrote:

> also sprach robin:
> > And the simplest way to create an new indpendent branch:
> 
> > echo ref: refs/heads/newbranch >.git/HEAD
> > Then prepare the content and commit like you used to do.
> 
> I am a little uneasy about touching files in .git with non-git
> tools, but everyone seems to be doing it, so I guess it's okay, and
> it make git a lot more powerful too.

You can achieve the same with

	git symbolic-ref HEAD refs/heads/newbranch

There.  No editing in .git/.

>   piper:~> echo ref: refs/heads/newbranch >| .git/HEAD
>   piper:~> git status
>   # On branch newbranch
>   #
>   # Initial commit
>   #
>   # Changes to be committed:
>   #   (use "git rm --cached <file>..." to unstage)
>   #
>   #       new file: date
>   #

However, this is much easier without Git commands:

	rm .git/index

Of course, you can remove all files one by one, but that is certainly not 
easier:

	git ls-files --cached -z | xargs -0 git rm --cached

But then, you really can learn from both examples: .git/index contains 
references to the objects which are staged (in Git speak: "in the index").  
Git plays nicely when that file is missing, and assumes the index to be 
empty.

With "git ls-files --cached", you can list the files which are in the 
index, and with "git rm --cached", you remove the file _only_ from the 
index, but keep it in the working tree (if it is there).  The options "-z" 
and "-0" are only to separate the names by NUL instead of newlines, to 
allow funny file names, too.

If a few more people ask for that feature, we could enhance the semantics 
of "git branch" and "git checkout" to interpret the empty string 
similar to "git push <repo> :<name>".

Ciao,
Dscho

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